发明名称 |
Digital video copy protection |
摘要 |
<p>A formatting apparatus authenticates an information signal prior to mass duplication of the signal by analyzing the signal to detect the presence or absence of a security signal therein, inserting a security signal into the information signal, and recording the modified signal only if no security signal was detected.</p> |
申请公布号 |
EP1758394(A2) |
申请公布日期 |
2007.02.28 |
申请号 |
EP20060024866 |
申请日期 |
1996.08.30 |
申请人 |
SONY CORPORATION |
发明人 |
TAHARA, KATSUMI;KOYANAGI, HIDEKI;YAGASAKI, YOICHI;FUJINAMI, YASUSHI |
分类号 |
H04N5/913;H04N5/926;H04N7/24 |
主分类号 |
H04N5/913 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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